Over the past few days there were some ants coming into our kitchen through the window. There were not too many of them so we were not really concerned, but this evening they seemed to decided that they probably should send in more workers to find something interesting. So we put out the ant baits in the hope that this will solve the problem. Surprisingly, the ants just walked past the bait, without going inside or even stopping by, and decided it is time to call for a full retreat.
Watching all this happened within a couple of minutes, Vivian made the comment "maybe they know that the bait will kill them so they flee back to home". Oh well, whatever works is good.